Alexis Escarcega-Bata , María Eugenia Zamudio-Resendiz , Adriana Hernández-Rosas , María Luisa Núñez Resendiz , Kurt M. Dreckmann , Abel Sentíes
{"title":"First record of Grammatodinium (Dinophyceae) for the American Eastern Pacific coast: Morphological, molecular and ecological confirmation","authors":"Alexis Escarcega-Bata , María Eugenia Zamudio-Resendiz , Adriana Hernández-Rosas , María Luisa Núñez Resendiz , Kurt M. Dreckmann , Abel Sentíes","doi":"10.1016/j.ejop.2022.125942","DOIUrl":null,"url":null,"abstract":"<div><p><em>Grammatodinium</em><span> Li & Shin is a monospecific genus described from the Tongyeong Bay area in Korea. In the current study, we describe its presence in the American Eastern Pacific coast for the first time, particularly in Acapulco Bay, Mexico, using morphological, molecular and environmental data. Sequences generated in this study with SSU and LSU formed a monophyletic group with other sequences from GenBank belonging to </span><em>Gr. tongyeonginum</em><span>, the only species known for the genus; however, genetic distance values between this species and our specimens (8.5% SSU; 2.8% LSU) were equivalent or even greater than those reported in other genera of dinoflagellates. Our phylogeny clearly showed the relationship of </span><em>Grammatodinium</em> with the families Pyrocystaceae and Gonyaulacaceae. In our specimens, cells appeared individually and in colonies of up to 16 cells, which were observed mainly during the dry season, so they could be confused with <span><em>Gymnodinium</em><em> catenatum</em></span><span>, a common dinoflagellate in Acapulco with which they can coexist and share their general appearance, but they are clearly differentiated by the presence of longitudinal furrows throughout the body and a yellowish-green coloration, both absent in </span><em>Gymnodinium catenatum</em>. Although our evidence strongly suggests the presence of a new species for the region, more detailed morphological examinations are needed to confirm this statement.</p></div>","PeriodicalId":12042,"journal":{"name":"European journal of protistology","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European journal of protistology","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0932473922000797","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MICROBIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Grammatodinium Li & Shin is a monospecific genus described from the Tongyeong Bay area in Korea. In the current study, we describe its presence in the American Eastern Pacific coast for the first time, particularly in Acapulco Bay, Mexico, using morphological, molecular and environmental data. Sequences generated in this study with SSU and LSU formed a monophyletic group with other sequences from GenBank belonging to Gr. tongyeonginum, the only species known for the genus; however, genetic distance values between this species and our specimens (8.5% SSU; 2.8% LSU) were equivalent or even greater than those reported in other genera of dinoflagellates. Our phylogeny clearly showed the relationship of Grammatodinium with the families Pyrocystaceae and Gonyaulacaceae. In our specimens, cells appeared individually and in colonies of up to 16 cells, which were observed mainly during the dry season, so they could be confused with Gymnodinium catenatum, a common dinoflagellate in Acapulco with which they can coexist and share their general appearance, but they are clearly differentiated by the presence of longitudinal furrows throughout the body and a yellowish-green coloration, both absent in Gymnodinium catenatum. Although our evidence strongly suggests the presence of a new species for the region, more detailed morphological examinations are needed to confirm this statement.
期刊介绍:
Articles deal with protists, unicellular organisms encountered free-living in various habitats or as parasites or used in basic research or applications. The European Journal of Protistology covers topics such as the structure and systematics of protists, their development, ecology, molecular biology and physiology. Beside publishing original articles the journal offers a forum for announcing scientific meetings. Reviews of recently published books are included as well. With its diversity of topics, the European Journal of Protistology is an essential source of information for every active protistologist and for biologists of various fields.